UPDATE - Additional charges are pending against 20-year-old Ashley Ryan Hareford in connection with his involvement with a 13-year-old Radnor girl, Delaware County District Attorney Jack Whelan has confirmed.

Hareford remains in custody in Washington, D.C. An extradition hearing is scheduled for later today.

RADNOR -- A missing 13-year-old township girl was found in Washington, D.C., traveling on an inexpensive Megabus with a Virginia man authorities believe she met online, possibly Facebook.

Shortly before 8 p.m. Tuesday, a team of township and county detectives were on their way to escort Savanna MacMullett back to Delaware County, as well as determine if 20-year-old Ashley Ryan Hareford would be waiving extradition on a misdemeanor corruption of a minor offense lodged Tuesday by Radnor authorities.

The teen, who was last seen when she left her home at 4 p.m. on Monday, was described to be in good condition but would undergo a medical evaluation making the return trip and reuniting with her family.

"Our top priority is to make sure she is on good medical and psychological condition," Radnor Police Lt. Christopher Flanagan said at a 9 p.m. press conference, the second briefing in four hours.

With MacMullett's whereabouts no longer a mystery, the focus now turns to the relationship with Hareford.

"As far as we are concerned, the investigation really starts now," Flanagan said late Tuesday.

Authorities indicate it is likely more serious charges will be filed against Hareford today.

Authorities believe the pair was on their way to Virginia.

Acting on an anonymous tip, metro police and U.S. Marshals met them at the bus stop in Washington, D.C., at about 7 p.m., ending an exhaustive search announced earlier Tuesday by Radnor police. MacMullett and Hareford apparently hopped the bus at 30th Street Station in Philadelphia.

According to authorities, Savanna MacMullett left her home in the Garrett Hill section of the township at 4 p.m. on Monday and was believed to be in the company of Hareford. The teen left the house after telling her grandmother she was going to the library.

Flanagan said Hareford was questioned by police outside MacMullet's house Sunday night, when an officer on patrol thought he looked suspicious. Thomas MacMullett, Savanna's father, said he, too, spoke to Hareford outside his home.

Hareford apparently hitchhiked from his home in Grottoes, Va., some 280 miles away, Thomas MacMullett, said.

Thomas MacMullett said earlier Tuesday that he was "very afraid" for his daughter's safety.

"Just the fact that she is not home," he said.

According to her father, Savanna created a Facebook account exclusively for her and Hareford.

Thomas MacMullett said he found Hareford's interest in a 13-year-old girl "disgusting."

On one of his Facebook pages, Hareford indicated he was posting from Bryn Mawr on Nov. 27 and 29. On Monday, Hareford shared an image with MacMullett on Facebook that said, "I have 3 sides. 1. The quiet, sweet side. 2. The fun and crazy side. 3. The side you never want to see."

Hareford's online profile lists Philadelphia as his residence. His "likes" include the movie "Texas Chainsaw 3D," Doritos, West Virginia University football and tattoos and piercings.

Thomas MacMullett mentioned an incident involving Savanna's older sister, who was 14 when she went off with a 28-year-old man, to New Jersey. At the time, he said Savanna was angry with her sister for her behavior.